Auctioned rhymes with:
functioned, malfunctioned, sanctioned, sectioned, unsanctioned, aforementioned, airconditioned, apportioned, auditioned, captioned, cautioned, commissioned, conditioned, contentioned, cushioned, decommissioned, fashioned, freshened, functioned, impassioned, malfunctioned, mentioned, motioned, oldfashioned, optioned, partitioned, petitioned, positioned, proportioned, propositioned, rationed, reconditioned, repositioned, requisitioned, sanctioned, sectioned, stationed, unsanctioned, vacationed
Auctioned sounds like:
accident, accustomed, actinide, actinidia, actmedia, assistant, astound, astounded